image: This graph illustrates the amount of money that has effectively been pledged (pledged capital), averaged by project category. Near the bars are reported the average figures in USD. This material relates to a paper that appeared in the June 12, 2015 issue of Science, published by AAAS. The paper, by M.G. Colombo at Politecnico di Milano in Milan, Italy, and colleagues was titled, "Cash from the crowd." view more
Credit: [Credit: Colombo, Franzoni & Rossi-Lamastra, 2015]